package servlet.navigate;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import operate.OperateType;

import offer.GetDataSource;
import offer.GetNodeFromModule;

import com.netscenery.yang.model.*;

public class GoToFindNodeTypeServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public GoToFindNodeTypeServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html; charset=utf-8");
		request.setCharacterEncoding("utf-8");
		response.setHeader("Cache-Control","no-cache"); 
		PrintWriter out = response.getWriter();
		String builtinType           = request.getParameter("baseType");
		String derivedType        = request.getParameter("derivedType");
		String pearent_nodeLevel  = request.getParameter("parent_nodeId");
		//String[] pearent_levels   = pearent_nodeLevel.split("_");
		String[]  pearent_levels  = pearent_nodeLevel.split("\\\\");
		//������Դ
		Module       module       = GetDataSource.getDataRead(request);
		Leaf     parentNode       = (Leaf)GetNodeFromModule.getDataDefByLervels(module, pearent_levels);
		Type type = null;
		/**
		 * Leaf �ڵ� Type ���ԵĴ��?
 		 * 1����ǰLeaf��û��Type���ԣ������������ԡ�
		 * 2����ǰ�ڵ���Type���ԣ����Ǳ��β������ύ��builtinType��Ԫ�ڵ��е�builtinType��һ�£���ʱɾ��ԭ����Type������������
		 * 3����ǰ�ڵ���Type���ԣ����β���ֻ�޸�derivedType�����޸�ԴType���Ե�derivedType����
		 */
		// ��1���͵�2�����
		if(null == parentNode.getType() || !parentNode.getType().getBase().name().equalsIgnoreCase(builtinType)){
			type = parentNode.createType(builtinType, "".equalsIgnoreCase(derivedType)?null:derivedType);
		}else if(!"".equalsIgnoreCase(derivedType)&&(null == parentNode.getType().getDerived() 
				||!parentNode.getType().getDerived().getName().equalsIgnoreCase(derivedType))){
			type = parentNode.createType(builtinType, derivedType);;
		}else{
			type = parentNode.getType();
		}
		parentNode.setType(type);
		//��ݳ־û�
		GetDataSource.getDataWrite(request, module);
		
		request.setAttribute("itemNode", type);
		request.setAttribute("opType", OperateType.LOAD);
		request.setAttribute("nodeId",pearent_nodeLevel);
		String url = "/items/"+ type.getClass().getSimpleName() +".jsp";
		ServletContext sc=this.getServletContext();
		RequestDispatcher rd=sc.getRequestDispatcher(url);
		rd.forward(request, response);
		out.flush();
		out.close();
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html");
		PrintWriter out = response.getWriter();
		out
				.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
		out.println("<HTML>");
		out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");
		out.println("  <BODY>");
		out.print("    This is ");
		out.print(this.getClass());
		out.println(", using the POST method");
		out.println("  </BODY>");
		out.println("</HTML>");
		out.flush();
		out.close();
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}
